Is there a way to make the fill bucket expand by a custom number of pixels?

[Mechamorph]

I'm a digital artist and I color by selecting areas of my lineart and expanding the selection by half the width of my lines, so I can get a clean lineless color layer. It would save me a lot of time if I didn't have to expand all of my selections and could just use the fill tool. Is there a way to make a custom fill tool that automatically fills a certain number of pixels outside of its edges?

[c.pfaffenbichler]

No. 

Work-arounds could be 

• coloring on a separate layer and applying Minimum to it afterwards (with »All Layers« checked for the Paint Bucket Tool) 

• coloring on a lower layer where the artwork has been »shrunk« (Maximum) below the multiplying artwork (with »All Layers« unchecked for the Paint Bucket Tool)

• …

Have you created and Action for expanding and filling and assigned it a shortcut? 

[tylerg7278487]

I was searching for this same thing, and the action c.pfaffenbichler suggested has been working great for me. I'm coloring on a layer beneath my line drawings and selecting areas with the magic wand tool set to "Sample All Layers." Then I've recorded a custom Action with F3 as the hotkey that Expands my selection by 3 pixels (Select Menu > Modify > Expand) and also Fills the selection with the foreground color (Edit Menu > Fill).

Now I can do exactly what I wanted -- make a selection from my line art, set a foreground color, and press F3 to expand and fill it in on my colors layer. Super fast and handy for coloring clean line art.